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A 100-kg mass is pulled along a frictionless surface by a force F such that its acceleration is 6 m/s2. A 20-kg mass slides along the top of the 100-kg mass and has an acceleration of 4 m/s2.(It thus slide back relative to the 100-kg mass). What is the frictional force in newtons exerted by the 100-kg mass on the 20-kg mass?
Two atomic clocks are carefully synchronized. One remains in New York, and the other is loaded on an airliner that travels at an average speed of 250m/s, Which clock will show the shorter elapsed time
A 0.42 kg ball is dropped from rest at a point 1.30m above the floor. The ball rebounds straight upward to a height of 0.580 m. What are the magnitude and direction of impulse of the net force applied to the ball during the collision with the floo..
There are 2 spaceships, A and B, that approach the earth from opposite directions. Now according to an observer on spaceship A,she approaches the earth at 0.7c. According to an observer onspaceship B, he approaches the earth at 0.85c.
A certain freely falling object requires 1.56 s to travel the last 37.0 m before it hits the ground. From what height above the ground did it fall.
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at60.0m/s and returns the shot with the ball traveling horizontally at34.0m/s in the opposite direction. What work does the racquet do on the ball
An LC circuit has zero resistance, no battery, a capacitor C=66microFarads, and an inductor L=0.7H connected in a simple loop. The capacitor and inductor store a compined total energy of U=24microJoules. What is the maximum magnetic field inside th..
A 5m-diameter garden pond holds 5.90 times 10^ {3};{rm kg} of water.
The pattern was recorded by using a neutron detector to measure the neutron internsity at different positions. determine how far the detector was behind the slits
Discuss in detail why it might be dangerous to microwave raw eggs with their shell intact using the concepts learnt today (Hint: pV = nRT).
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What was the bullet's speed as it left the barrel
A long wire on the x-axis carries 25 A of current to the right. A rectangular loop (0.70 m wide and 0.80 m height) of 36 gauge copper wire in the x-y plane begins with its center at a location of 0.45 meters directly above the wire. The loop moves..
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